838 – al-Thawrī said: We heard that when snow (or: ice) has taken place, one not being able (to find) dirt with it, or mire, one not being able (to find) dirt, then one does tayammum from the mane of his horse, and from its elbow and from whatever there is dust in it from its (or: his) head-covering (qināʿ)

Translator’s note: Elsewhere this tradition is written as having “his slab” instead of elbow, and “his goods” instead of head-covering, which would appear to be more correct than what is written above.